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Quantum Physics

Title:Quantum H-theorem and irreversibility in quantum mechanics

Abstract: We investigate temporal evolution of von Neumann's entropy in exemplary
quantum mechanical systems and show that it grows in systems evolving with
incrementally increasing decoherence during scattering processes. We
demonstrate that the origin of irreversibility lies in complexity of preparing
time-reversed quantum states due to entanglement and in partitioning of the
wave function of the evolving system.